[rrd-users] how to feed rrdtool unknown values

[Tobias Oetiker]

and what you want to use is 'U' (capital) 

cheers 
tobi 

----- On Mar 15, 2017, at 10:08 AM, Andreas Schuldei <andreas+rrdtool at schuldei.org> wrote: 

> I find different notations when googeling for ways to feed unknown values to
> rrdtool. Things i find are "UNKN", "u", "NaN". I realize it might depend on
> context and programming language.

> My situation: i wrote a perl plugin for collectd (written in c), which uses
> librrd. What do i need to do in my perl plugin so that "unknown" will turn up
> in the rrd files?

> (I realize that collectd sits in the middle, but I assume its only a very thin
> layer and doesn't meddle with my data.)

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-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland 
www.oetiker.ch tobi at oetiker.ch +41 62 775 9902 
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